Photonics 60 GBaud PDM-16QAM fiber-wireless 2 × 2 MIMO delivery at THz-band
Weiping Li, Jianjun Yu, Bowen Zhu, Jianyu Zhang, Min Zhu, Chen Wang, Wen Zhou, Tangyao Xie, Jianguo Yu, Feng Zhao
Abstract
The terahertz photonics technique has bright application prospects in future sixth-generation (6G) broadband communication. In this study, we have experimentally demonstrated a photonics-assisted record-breaking net bit rate of 417 Gbit/s per wavelength signals delivery in a fiber-wireless converged communication system supported by advanced digital-signal-processing (DSP) algorithms and a polarization multiplexing-based multiple-input multiple-output (MIMO) scheme. In the experiment, up to 60 GBaud (480 Gbit/s) polarization-division-multiplexing 16-ary quadrature-amplitude-modulation (PDM-16QAM) signals are transmitted over 20 km fibers and 3 m wireless 2×2 MIMO links at 318 GHz with the bit error rate (BER) under 1.56×10-2. It is the first demonstration to our knowledge of signals delivery exceeding 400 Gbit/s per wavelength in a photonics-assisted fiber-wireless converged 2×2 MIMO communication system.